为什么普通工业吸尘器在粉尘区是火源

Why a Standard Industrial Vacuum Is an Ignition Source in Dust Areas

在可燃粉尘环境里，普通吸尘器的电机火花、静电积聚和过热表面都可能成为点火源。英国 HSE 的 DSEAR（危险物质危险场所法规）要求：在分区环境中使用标准吸尘器本身即构成违规。一台合格的防爆工业吸尘器必须整体通过公告机构认证，而不是事后加一根接地线或抗静电软管就能“改装”合规——ATEX 合规是产品设计制造时就内置的。

In a combustible-dust environment, the motor spark, static buildup and hot surfaces of an ordinary vacuum can all become ignition sources. Under the UK HSE's DSEAR (Dangerous Substances and Explosive Atmospheres Regulations), using a standard vacuum in a zoned area is itself a breach. A compliant explosion-proof industrial vacuum must be certified as a complete unit by a notified body — it is not made compliant by retrofitting a ground wire or antistatic hose afterward. ATEX compliance is built into the design and manufacturing.

先看懂三个粉尘爆炸危险分区

Understand the Three Dust Hazard Zones First

分区由场所的风险评估决定（这是法律要求，不是可选项）。Zone 20：爆炸性粉尘云长期或频繁存在；Zone 21：正常操作中偶尔可能出现；Zone 22：正常操作中不太可能出现，即使出现也只持续短时间（例如表面积尘被扰动形成粉尘云的区域）。Zone 22 是最常见的粉尘分区，遍布处理粉料或产生粉尘的设施。

Zoning is decided by a risk assessment (a legal requirement, not optional). Zone 20: an explosive dust cloud is present continuously or frequently. Zone 21: it may occur occasionally during normal operation. Zone 22: it is not likely in normal operation, but if it occurs it persists only briefly — for example areas where dust layers accumulate and could form a cloud when disturbed. Zone 22 is the most common dust zone and is found throughout facilities handling powders or generating dust.

ATEX 设备类别如何对应分区

How ATEX Equipment Categories Map to Zones

对于粉尘环境（Group II D），ATEX 把设备分成三类：Category 1D 适用于 Zone 20/21/22，保护等级最高；Category 2D 适用于 Zone 21/22；Category 3D 仅适用于 Zone 22。规则是“高类别可用于低危险区”，但绝不可反向——把 Category 3D 设备用在 Zone 21 既违法又危险。如果风险评估把某区域定为 Zone 21，就必须使用至少 Category 2D 的吸尘器。

For dust atmospheres (Group II D), ATEX defines three categories: Category 1D covers Zones 20/21/22 with the highest protection; Category 2D covers Zones 21/22; Category 3D covers Zone 22 only. The rule is you may use a higher category in a lower-hazard zone, but never the reverse — using Category 3D equipment in Zone 21 is both illegal and dangerous. If your assessment classifies an area as Zone 21, you must use at least a Category 2D vacuum.

关键标准 EN 17348:2022 是什么

What the Key Standard EN 17348:2022 Means

EN 17348:2022 是专门针对“潜在爆炸性环境中使用的工业真空吸尘器”的欧洲协调标准，2023 年 3 月成为协调标准后，符合它即推定符合 ATEX 指令的基本要求。采购新设备时应优先选择符合 EN 17348:2022 的机型，这代表当前最佳实践。常见防爆设计包括：Ex "t" 粉尘防护外壳、抗静电（导电）软管与配件、接地连续性（整机含配件泄漏电阻不超过 1 MΩ）、双级过滤（Class M 主滤 + HEPA H14 末级滤，效率 >99.995%）、至少 IP54 防护等级、表面温度不超过 135°C。

EN 17348:2022 is the European harmonised standard specifically for industrial vacuum cleaners intended for use in potentially explosive atmospheres. After becoming harmonised in March 2023, conforming to it gives a presumption of conformity with the ATEX Directive. When buying new equipment, look for conformity with EN 17348:2022 as a sign of up-to-date design. Common explosion-protection features include an Ex "t" dust-tight enclosure, antistatic (conductive) hose and accessories, grounding continuity (leakage resistance ≤ 1 MΩ including accessories), two-stage filtration (Class M pre-filter + HEPA H14 final filter >99.995% efficient), at least IP54 protection, and a surface temperature not exceeding 135°C.

选购防爆工业吸尘器的检查清单

Checklist for Choosing an Explosion-Proof Industrial Vacuum

1）确认你场所的分区结论（来自 DSEAR/风险评估）；2）设备类别必须覆盖该分区（Zone 21 至少 2D，Zone 22 至少 3D）；3）要求提供 EU/UK 符合性声明、公告机构签发的 ATEX 证书、含防爆要求的操作维护说明书；4）确认是否支持干湿两用—— dusty + 液体的场景需要专门认证型号；5）检查过滤等级（HEPA/多级）与表面温度标记；6）索取 IECEx 证书（如适用 Zone 22，ISO IEC 62784 是唯一的 IECEx 适用标准）。

1) Confirm your site's zoning from the DSEAR/risk assessment. 2) Equipment category must cover that zone (Zone 21 ≥ 2D; Zone 22 ≥ 3D). 3) Require the EU/UK Declaration of Conformity, the ATEX certificate issued by the notified body, and operating/maintenance instructions covering ATEX requirements. 4) Confirm wet-and-dry capability if you also collect liquids — only specifically rated models are safe. 5) Check filtration grade (HEPA/multi-stage) and surface-temperature marking. 6) Ask for IECEx certificates where relevant (for Zone 22, ISO IEC 62784 is the only applicable IECEx standard).

常见误区与维护要求

Common Mistakes and Maintenance

误区一：忽略积尘层——即使粉尘云很少，只要表面积尘被扰动，就可能落入 Zone 22。热表面上仅 1mm 的可燃粉尘层就可能被点燃。误区二：以为改装就能合规——ATEX 必须整机认证，事后改装属严重违规。维护上，ATEX 吸尘器一般至少每年由合格人员检查一次，频繁使用需更勤；过滤器、密封、接地连续性、软管完整性都要定期目视与电气检查。

Mistake 1: forgetting dust layers — even where dust clouds are rare, a disturbed layer can fall into Zone 22; a 1 mm layer of combustible dust on a hot surface can ignite. Mistake 2: assuming retrofits make it compliant — ATEX must be certified as a whole unit, and post-hoc modification is a serious breach. For maintenance, ATEX vacuums should generally be inspected at least annually by a competent person, more often if heavily used; filters, seals, grounding continuity and hose integrity all need regular checks.

ApexClean 的相关真实产品

ApexClean Real Products for Reference

对于非防爆的日常工业清洁，ApexClean Global 提供成熟的工业吸尘/吸水机型（如 70L 双马达吸尘吸水机、商用吸尘吸水机等），覆盖工厂车间、仓储的一般性干湿清洁需求。若你的场所为粉尘防爆区，请务必在询盘时说明分区等级与粉尘类型，我们的团队会协助匹配符合对应 ATEX 类别的认证方案，切勿以普通机型替代防爆机型。

For non-hazard, everyday industrial cleaning, ApexClean Global offers proven industrial wet/dry vacuum machines (such as 70L dual-motor wet/dry vacuums and commercial wet/dry vacuums) covering general dry and wet cleaning in factories and warehouses. If your site is a dust explosion-protection zone, state the zone level and dust type in your inquiry — our team will help match a certified solution for the correct ATEX category. Never substitute a standard machine for an explosion-proof one.